8.1.2.0 and C# 8 features: Recursive Pattern Matching

[fx.practic]

Simple way like this works fine:

int x = 5;
if (x is int v)
{
} 

More complex form like do compile but causing problems in formatting and false syntax error warnings:

object o = "";
if (o is string { Length: 5 } s)
{
}​ 

This is what NS Editor shows right after a compilation.
(In more complex scripts regions formatting become totally corrupted. Error highlighting appearing in dozens of places.)



And here are false warnings if I'll type any symbols (including innocent SPACE) anywhere:

[NinjaTrader_BrandonH]

Hello fx.practic,

Thanks for your post.

I was able to recreate this behavior on my end.

We are researching this matter further to provide you with the best information possible.

Once we are finished investigating this behavior we will update this forum thread with more information.

Thanks for your patience.

[NinjaTrader_BrandonH]

Hello fx.practic,

Thanks for your patience.

I have reported this behavior to the Development team so they may investigate this matter further. The ID for this reported behavior is NT-11393.

Once the Development team has finished investigating this and reports back I will update this forum thread with their findings.

Thanks for reporting this!

[fx.practic]

Thank you, glad to hear this!

[NinjaTrader_BrandonH]

Hello fx.practic,

Thanks for your patience.

Our Development team has informed me that a fix for this will be implemented. We do not have an estimated time for when the fix will be implemented.

In the meantime, you will need to work around the issue for by either not using that type of code, or ignoring the error marks that appear until you recompile.